Deuteronomy 4:30 in the King James Version
When thou art in tribulation, and all these things are come upon thee, even in the latter days, if thou turn to the LORD thy God, and shalt be obedient unto his voice;
Context
29 But from there you shall seek the LORD your God, and you will find him when you search after him with all your heart and with all your soul.
30 When you are in oppression, and all these things have come on you, in the latter days you shall return to the LORD your God and listen to his voice.
31 For the LORD your God is a merciful God. He will not fail you nor destroy you, nor forget the covenant of your fathers which he swore to them.